- LYONS ONEILL LIMITED- 06394968 - Incorporated on 10 October 2007 
- ONEILL INTERIORS LTD- SC309950 - Incorporated on 11 October 2006 
- MR MR2 LTD- 11218539 - Incorporated on 21 February 2018 
- SHARON ONEILL LIMITED- 11909835 - Incorporated on 27 March 2019 
- ONEILL TELECOMMUNICATIONS LTD- 13151137 - Incorporated on 21 January 2021 
- MR & MR LTD- 16489396 - Incorporated on 2 June 2025 
- BIRD GROUP (UK) LIMITEDActive - Proposal to Strike off- 07499570 - Incorporated on 20 January 2011 
- RAD DIVING LTD- 15659057 - Incorporated on 18 April 2024 
- ADRIAN & ADRIAN TRANS LIMITEDDissolved- 10971986 - Dissolved on 26 February 2019 
- MR MR LTDActive - Proposal to Strike off- 15533685 - Incorporated on 1 March 2024 
- MARRIOTT HOTELS INTERNATIONAL LIMITED- 01673907 - Incorporated on 26 October 1982 
- MH PARTNERSHIP SERVICES LIMITEDActive - Proposal to Strike off- 04323978 - Incorporated on 16 November 2001 
- PARK TAXIS LIMITEDActive - Proposal to Strike off- 06773861 - Incorporated on 16 December 2008 
- ASSISTED LIVING SOUTH WEST GROUP LIMITED- 07604202 - Incorporated on 14 April 2011 
- MARRIOTT GIBBS REES WALLIS LIMITED- 04041587 - Incorporated on 27 July 2000 
- MARRIOTT VALUERS LIMITED- 11235026 - Incorporated on 5 March 2018 
- A A MARRIOTT LIMITED- 04417628 - Incorporated on 16 April 2002 
- V.A.MARRIOTT,LIMITEDLiquidation- 00166379 - Incorporated on 13 April 1920 
- A & D MARRIOTT LIMITEDActive - Proposal to Strike off- 06939811 - Incorporated on 22 June 2009 
- BRUCE MARRIOTT LTDDisolved- 12755131 - Dissolved on 9 November 2021